What are the symptoms of a dirty throttle body in a car?

[LeBennett]

Car may experience unstable idle, difficulty starting, and reduced power. Below is a partial introduction about the car throttle body: 1. Introduction: The throttle body is a controllable valve that regulates air intake into the engine. After entering the intake manifold, the air mixes with gasoline to form a combustible mixture, which then burns to generate power. 2. Consequences: An excessively dirty throttle body can lead to insufficient engine power, while over-cleaning may cause premature failure of the throttle body. 3. Throttle body cleaning methods: There are two types—removal cleaning and non-removal cleaning. Typically, 4S shops perform removal cleaning, which involves dismantling the entire throttle body assembly, thoroughly cleaning it with specialized cleaning agents, and then reassembling it.